Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas datas os golfinhos têm 6 pontos?
 ###Tabelas: CREATE TABLE schedule (schedule_id AUTO_INCREMENT PRIMARY KEY, Game INT, Date VARCHAR, Opponent VARCHAR, Result VARCHAR, Dolphins points INT, Opponents INT, Record VARCHAR, Attendance INT) CREATE TABLE by_country (by_country_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, % of all immigrants 2008 VARCHAR, % of all immigrants 2007 VARCHAR, % of all immigrants 2006 VARCHAR, % of all immigrants 2005 VARCHAR, % of all immigrants 2004 VARCHAR) CREATE TABLE first_round_thursday (first_round_thursday_id AUTO_INCREMENT PRIMARY KEY, Place VARCHAR, Player VARCHAR, Country VARCHAR, Score INT, To par VARCHAR) CREATE TABLE minor_competitions (minor_competitions_id AUTO_INCREMENT PRIMARY KEY, Competition VARCHAR, Played INT, Derby County INT, Draw INT, Nottingham Forest INT, Derby County Goals INT, Nottingham Forest Goals INT) CREATE TABLE michigan_single-game_reception_yardage (michigan_single-game_reception_yardage_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Rec. INT, Yards INT, Average INT, s Touchdown INT, Year INT, Opponent VARCHAR)  
SELECT Date FROM schedule WHERE Dolphins points = 6